Mobster James “Whitey” Bulger’s girlfriend was indicted Thursday by federal prosecutors for conspiracy to harbor and conceal a fugitive.

Catherine Greig, who was living with Bulger in their small Santa Monica, Calif. apartment when he was arrested by the FBI, was arrested the same day and is being charged with helping him hide for the 16 years he was on the run.

She has been in jail since their June arrest. Bulger is charged with 19 murders while he was a mob boss leading the Winter Hill Gang. He has pleaded not guilty.

Talk about returning to the scene of the crime!

Brazen mob boss James 'Whitey' Bulger returned to Alcatraz, where he was previously incarcerated for four years, as a tourist during his 16 years on the run, and even posed for photos in prison stripes, RadarOnline.com can reveal.

The gangland baron - who inspired the movie The Departed - visited the famous prison during a trip to San Francisco with mob moll Teresa Stanley.

PHOTOS: Sexy Stars Who Have Been Arrested

According to the New York Post Whitey refused to go undercover at his old stomping ground - known as The Rock - and took a souvenir snap of himself at his former lock-up where he served time for armed robbery and hijacking.

Wearing matching cartoon style black and white striped outfits and standing behind bars, Bulger and Stanley mugged for the cameras.

The 81-year-old - who was caught by authorities on June 22, 2011 -  was believed to have been in the California city in 1995 after fleeing Boston under the threat of an indictment for murder and racketeering.

PHOTOS: Celebs Who Have Done Jail Time

He made it to the top of the FBI's Most Wanted List after Osama Bin Laden was killed and was wanted in connection with 19 murders.

Bulger and his girlfriend, Catherine Greig, were arrested at their Santa Monica apartment and had been living unassumingly off the alleged millions of dollars he had made during his time as a mobster.

RELATED STORIES:

PHOTOS: The Name Game - Celebs Who've Changed Their Names

James ‘Whitey’ Bulger’s Ex-Neighbor Reveals Details Of His Life Before Going On The Run

Fugitive Who Inspired 'The Departed' Arrested After 16 Years On The Lam

He was number two on the FBI’s Most Wanted List – right behind Osama bin Laden. (When bin Laden died, he became number 1).

After spending 16 years on the run, Boston-based mafia kingpin James "Whitey" Bulger will face a federal judge in a Los Angeles courtroom Thursday to face charges of murder, conspiracy to commit murder, narcotics distribution, extortion and money laundering, among others.

Bulger, who inspired aspects of Jack Nicholson's character in the Oscar-winning 2006 film The Departed, has appeared on the FBI's Ten Most Wanted list -- with a $2 million reward for key info -- in connection with 19 murders he's tied to.

The FBI said Bulger, who was allegedly the head of Boston's Winter Hill Gang, played a “role in numerous murders committed from the early 1970s through the mid-1980s in connection with his leadership of an organized crime group that allegedly controlled extortion, drug deals, and other illegal activities.”